[TVARC] High Noise levels on HF

[K2PS Pete Stafford]

Hi Ed,

What you're describing sounds like my situation.  But I know that it stems
from the pool filter electronics.  I shut off the power to it over contest
weekends to solve the problem.

73, Pete, K2PS

-----Original Message-----
From: tvarc-bounces at mailman.qth.net [mailto:tvarc-bounces at mailman.qth.net]
On Behalf Of k2te at juno.com
Sent: Thursday, April 16, 2020 7:18 AM
To: phrankxm at gmail.com
Cc: tvarc at mailman.qth.net
Subject: Re: [TVARC] High Noise levels on HF

Frank,

I have not been listening much on the higher bands because there has not
been much of anything there.  What I do hear is a pulsating noise on 20
that shows up periodically during the day.  It fluctuates at a 1 Hz rate
about an S unit.  I have also observed a noise "mound" on my panadapter
on all bands that is 3-4 S units above the noise and 3 kHz wide.  It
rolls back and forth across the band at a slow rate, drowning out all but
the strongest signals.  I did a tuning run across HF and found it to
occur every 55 - 70 kHz throughout the spectrum.  My suspicion is the
power distribution station about 0.3 miles down the road.  I do not
notice it on AM in the car when driving past. (Not sensitive enough?)

Fortunately, it does not affect FT8.

73 de Ed

______________________________________________________________
TVARC mailing list
Home: http://mailman.qth.net/mailman/listinfo/tvarc
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:TVARC at mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html